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There are three sources of sound of equa...

There are three sources of sound of equal intensity with frequencies 400, 401 and 402 vib/sec . The number of beats heard per second is

A

0

B

1

C

2

D

3

Text Solution

Verified by Experts

The correct Answer is:
C
`1 b//s =(1)/(1)`
`1b//s=(1)/(1)`
`2b//s =(1)/(2)(2)/(2)= 2b//sec`
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